3 phase charging system check?
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Road Captain
Joined: Nov 2007
Posts: 517
Likes: 6
From: Ottawa, ON
But I hope I didn't burn the regulator by running it not connected?
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,195
Likes: 3,085
From: NW AR
I doubt you damaged the regulator with it disconnected. What is the voltage across the battery at about 2K RPM? What is the voltage with the bike "on" but the motor not running? What is the voltage with the bike off? Really, you can do all the regulator tests from my sticky. It is still sounding like a regulator.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,293
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From: Honah Lee
joken, I should have read closer and not assumed how you were doing it. When you check stator output, you disconnect the plug from the regulator to check it for output. Also missed you were using the 3 phase alternator with a two phase regulator. Not even sure how you managed that. The phases out are all the same on the three. Dr Hess, what is the base AC volts out of the old 2 phase stators?
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,195
Likes: 3,085
From: NW AR
I think he's trying to use a 3 phase regulator on a 3 phase stator. I hope anyway, otherwise, all bets are off.
My sticky says: 19-26 V / 1K RPM according to my shop manual.
My sticky says: 19-26 V / 1K RPM according to my shop manual.
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Thread Starter
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Road Captain
Joined: Nov 2007
Posts: 517
Likes: 6
From: Ottawa, ON
Yes it's a 3 phase regulator on a 3 phase stator.
But! It's a 2 phase aftermarket sealed magnets who-the-hell-knows-what-size rotor!
That's why I'd guess it still doesn't work! Where I bought that stator they claimed it should work with OEM rotor, but mine is clearly not!
The difference bw 3 phase and 2 phase stators - -12 poles vs 18. Thus I think magnet size matters.
So it didn't work with brand new regulator either.
I can't believe it, but the dealer was nice enough to take the regulator back. They ordered some aftermarket 3 phase rotor (HD rotor, which is way cheaper, wouldn't work, coz the TC splines are different).
I hope this time it will work, I cannot see anything else being wrong in this equation...
But! It's a 2 phase aftermarket sealed magnets who-the-hell-knows-what-size rotor!
That's why I'd guess it still doesn't work! Where I bought that stator they claimed it should work with OEM rotor, but mine is clearly not!
The difference bw 3 phase and 2 phase stators - -12 poles vs 18. Thus I think magnet size matters.
So it didn't work with brand new regulator either.
I can't believe it, but the dealer was nice enough to take the regulator back. They ordered some aftermarket 3 phase rotor (HD rotor, which is way cheaper, wouldn't work, coz the TC splines are different).
I hope this time it will work, I cannot see anything else being wrong in this equation...
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,195
Likes: 3,085
From: NW AR
The only other thing to do would be to load test the stator. Not going to be easy with a 3 phase. You could measure the stator output/regulator input voltage with the regulator connected and the bike running. That would tell you if the stator output was dropping off under load. You'd need a special plug or some creative jumpering to do that. You're losing power somewhere when it is all hooked up. Just have to find it. If the stator output is really weak, it could be from a bad stator or it is possible that the 3 phase stator takes the other magnet set. Like I said, I'm not an expert on the 3 phase systems.
Really, I think the best thing you can do here is to buy the OEM HD high output charging system, put that on there and quit messing with it. I think the 32 amp one fits all the Evos, but I'd have to check my notes.
Really, I think the best thing you can do here is to buy the OEM HD high output charging system, put that on there and quit messing with it. I think the 32 amp one fits all the Evos, but I'd have to check my notes.